PPT-Contraction, depolarization, and repolarization

Physiology of the Heart Mechanism and Events of Contraction 1 Influx of sodium ions from the extracellular fluid into the cells initiates the action potential by opening voltageregulated sodium channels . Look at the following sentence:. A woman without her man is nothing.. Write it down. Over the course of the lesson we will look at punctuation to see how it changes meaning and how it creates different effects.. ANSC 3404. Objectives. : Study the structures of muscle and the mechanism of muscle contraction.. . SKELETAL. . SMOOTH. . CARDIAC. METHOD OF CONTROL VOLUNTARY INVOLUNTARY . INVOLUNTARY. BANDING PATTERN STRIATED NON-STRIATED STRIATED. Review Principles of Muscle Mechanics. Same principles apply to contraction of a single fiber and a whole muscle. Contraction produces tension, the force exerted on the load or object to be moved. Review Principles of Muscle Mechanics. January8, 2008;March11, 2008. HellenicJ Cardiol 2009; 50: 60-65 Review ArticleReview Article The Tei index appears to have close correlation withtion in the assessment of overall cardiac perform-The Learning Objective:. To . be able to explain the sliding filament theory . using key . terminology.. Structure of a Muscle. Skeletal muscle is made up of bundles of muscle . fibres. .. Fibres. are bound together by connective tissue through which run blood vessels and nerves.. Circuits of the Blood. There are 3 circuits:. Systemic Circulation. From the left ventricle to the aorta and on to the body. Back to the heart via the superior and inferior vena cava to the right atrium. Cardiac Muscle Contraction. Depolarization of the heart is rhythmic and spontaneous. About 1% of cardiac cells have automaticity— (are self-excitable). Gap junctions ensure the heart contracts as a unit. OBJECTIVES. Define. . the action potential.. Describe. the . changes. . during action potential.. Discuss . conduction. (propagation) of action potential. Describe . recording . of . monophasic. Cardiac Muscle Contraction. Depolarization of the heart is rhythmic and spontaneous. About 1% of cardiac cells have automaticity— (are self-excitable). Gap junctions ensure the heart contracts as a unit. Chapter 5: The Muscular System. The three major categories of muscle fibers are:. Skeletal . Smooth . Cardiac . Muscle Tissue. Skeletal Muscle (striated / voluntary muscle). Attached . to bones . and are largely . Cardiac Muscle Contraction. Depolarization of the heart is rhythmic and spontaneous. About 1% of cardiac cells have automaticity— (are self-excitable). Gap junctions ensure the heart contracts as a unit. Same principles apply to contraction of a single fiber and a whole muscle. Contraction produces tension, the force exerted on the load or object to be moved. Review Principles of Muscle Mechanics. Contraction does not always shorten a muscle:. Dr. Tamara . Alqudah. Aim of the experiment. Learn some of the characteristics of skeletal muscle contraction. Simple muscle twitch. Summation . Tetanization. Fatigue. Treppe. phenomenon. Muscle twitch. October . 24 - 25 2017. Muscle . Structure. Muscle. Fascicle (bundle of fibers). Muscle . Fiber (single cell). Myofibril (organelle). Sarcomere (unit of contraction). Microscopic Anatomy of Skeletal Muscle.